Add instance data dashboard (default off).

Read-only overview of live orders, key monitors, and strategy; show options/hedge only when present. Toggle via system settings nav prefs.

Co-authored-by: Cursor <cursoragent@cursor.com>

lib/common/static/instance_embed.js

@@ -4,6 +4,7 @@
  */
 (function (global) {
   const TAB_PATH = {
+    dashboard: "/dashboard",
     key_monitor: "/key_monitor",
     trade: "/trade",
     strategy: "/strategy",
@@ -99,6 +100,9 @@
     if (!revisit && tab === "key_monitor" && global.KeyMonitorForm && typeof global.KeyMonitorForm.init === "function") {
       global.KeyMonitorForm.init();
     }
+    if (tab === "dashboard" && global.InstanceDashboard && typeof global.InstanceDashboard.init === "function") {
+      global.InstanceDashboard.init(!!revisit);
+    }
     if (!revisit && tab === "strategy" && typeof global.initStrategyRollForm === "function") {
       global.initStrategyRollForm();
     }